I think what annoys me about this (although equally applies to other parks and to pre-Aramark) - typically you'd expect the "main item" (burger or whatever) on its own to seem expensive, turn it into a meal and it's £1 more totalling something reasonable (given that chips and drink are extremely high margin), but they typically add much more than this at theme parks.
I was at Towers on the 31st March and 1st April and I think I had a couple of goes at X Sector Chicken, and one visit to the non-Aramark (no MAP discount) food stalls opposite Rita. I had the chicken strips, I found the chips to be rather nice (thicker than you expect for fries, but not quite what you'd expect for chips), the strips looked like they were cheap but tasted okay although obviously were frozen - I much preferred what they served a few years back (still cheap and frozen but I think it had a bit more flavour to it)
Price - we've all seen the screenshots, I think the large meal was about a tenner after the 20% discount. Compared to the equivalent at BPB - 5 strip meal from FY4 chicken by the fountains - I think that was about £7 after the 10% discount. BPB version - standard fries, nice but preferred the X Sector chips - but the bit that actually matters, the chicken - infinitely nicer at BPB. You can tell it's made freshly that day - if you time it right you can just about see the chicken going into the flour/seasoning etc before it's into the pressure fryer when they've emptied the hot cabinet.
Overall (in my limited experience of only the chicken in X-Sector), quality is roughly the same as before ("okay" quality, nothing to write home about), prices are far too high for the quality.